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<table width="100%" summary="page for Caterpillars"><tr><td>Caterpillars</td><td style="text-align: right;">R Documentation</td></tr></table>

<h2>Caterpillars</h2>

<h3>Description</h3>

<p>Measurements on a sample of Manduca Sexta caterpillars
</p>


<h3>Format</h3>

<p>A dataset with 267 observations on the following 18 variables.
</p>

<table summary="Rd table">
<tr>
 <td style="text-align: right;">
    <code>Instar</code> </td><td style="text-align: left;"> Coded from 1 (smallest) to 5 (largest) indicating stage of the caterpillar's life</td>
</tr>
<tr>
 <td style="text-align: right;">
    <code>ActiveFeeding</code> </td><td style="text-align: left;"> Indicator (<code>Y</code> or <code>N</code>) of whether or not the animal is actively feeding</td>
</tr>
<tr>
 <td style="text-align: right;">
    <code>Fgp</code> </td><td style="text-align: left;"> Indicator (<code>Y</code> or <code>N</code>) of whether or not the animal is in a free growth period</td>
</tr>
<tr>
 <td style="text-align: right;">
    <code>Mgp</code> </td><td style="text-align: left;"> Indicator (<code>Y</code> or <code>N</code>) of whether or not the animal is in a maximum growth period</td>
</tr>
<tr>
 <td style="text-align: right;">
    <code>Mass</code> </td><td style="text-align: left;"> Body mass (in grams)</td>
</tr>
<tr>
 <td style="text-align: right;">
    <code>LogMass</code> </td><td style="text-align: left;"> Log (base 10) of body mass</td>
</tr>
<tr>
 <td style="text-align: right;">
    <code>Intake</code> </td><td style="text-align: left;"> Wet food intake (in grams/day)</td>
</tr>
<tr>
 <td style="text-align: right;">
    <code>LogIntake</code> </td><td style="text-align: left;"> Log (base 10) of Intake</td>
</tr>
<tr>
 <td style="text-align: right;">
    <code>WetFrass</code> </td><td style="text-align: left;"> Amount of frass (solid waste) produced (in grams/day)</td>
</tr>
<tr>
 <td style="text-align: right;">
    <code>LogWetFrass</code> </td><td style="text-align: left;"> Log (base 10) of WetFrass</td>
</tr>
<tr>
 <td style="text-align: right;">
    <code>DryFrass</code> </td><td style="text-align: left;"> Amount of frass, after drying, produced (in grams/day)</td>
</tr>
<tr>
 <td style="text-align: right;">
    <code>LogDryFrass</code> </td><td style="text-align: left;"> Log (base 10) of DryFrass</td>
</tr>
<tr>
 <td style="text-align: right;">
    <code>Cassim</code> </td><td style="text-align: left;"> CO2 assimilation (ingestion - excretion)</td>
</tr>
<tr>
 <td style="text-align: right;">
    <code>LogCassim</code> </td><td style="text-align: left;"> Log (base 10) of Cassim</td>
</tr>
<tr>
 <td style="text-align: right;">
    <code>Nfrass</code> </td><td style="text-align: left;"> Nitrogen in frass</td>
</tr>
<tr>
 <td style="text-align: right;">
    <code>LogNfrass</code> </td><td style="text-align: left;"> Log (base 10) of Nfrass</td>
</tr>
<tr>
 <td style="text-align: right;">
    <code>Nassim</code> </td><td style="text-align: left;"> Nitrogen assimilation (ingestion - excretion)</td>
</tr>
<tr>
 <td style="text-align: right;">
    <code>LogNassim</code> </td><td style="text-align: left;"> Log (base 10) of Nassim</td>
</tr>
<tr>
 <td style="text-align: right;">
  </td>
</tr>

</table>



<h3>Details</h3>

<p>Student and faculty researchers at Kenyon College conducted
numerous experiments with Manduca Sexta caterpillars to study biological growth.
</p>


<h3>Source</h3>

<p>We thank Professors Harry Itagaki, Drew Kerkhoff, Chris Gillen, and Judy Holdener and their students for
sharing this data from research supported by NSF InSTaRs grant #0827208.
</p>


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